Program to calculate angle between two N | C # program for the above approach ; Function to find the magnitude of the given vector ; Stores the final magnitude ; Traverse the array ; Return square root of magnitude ; Function to find the dot product of two vectors ; Stores dot product ; Traverse the array ; Return the product ; Stores dot product of two vectors ; Stores magnitude of vector A ; Stores magnitude of vector B ; Stores angle between given vectors ; Print the angle ; Driver Code ; Given magnitude arrays ; Size of the array ; Function call to find the angle between two vectors
using System ; using System . Collections . Generic ; class GFG { static double magnitude ( double [ ] arr , int N ) { double magnitude = 0 ; for ( int i = 0 ; i < N ; i ++ ) magnitude += arr [ i ] * arr [ i ] ; return Math . Sqrt ( magnitude ) ; } static double dotProduct ( double [ ] arr , double [ ] brr , int N ) { double product = 0 ; for ( int i = 0 ; i < N ; i ++ ) product = product + arr [ i ] * brr [ i ] ; return product ; } static void angleBetweenVectors ( double [ ] arr , double [ ] brr , int N ) { double dotProductOfVectors = dotProduct ( arr , brr , N ) ; double magnitudeOfA = magnitude ( arr , N ) ; double magnitudeOfB = magnitude ( brr , N ) ; double angle = dotProductOfVectors / ( magnitudeOfA * magnitudeOfB ) ; Console . Write ( angle ) ; } public static void Main ( ) { double [ ] arr = { - 0.5 , - 2 , 1 } ; double [ ] brr = { - 1 , - 1 , 0.3 } ; int N = arr . Length ; angleBetweenVectors ( arr , brr , N ) ; } }